#head1 {
    text-align: center;
    font-weight: 500;
    font-size: 21px;
    margin-bottom: 10px;
}
#head_img {
    float: right;
    height: 20px;
    margin: 5px 15px 0 0;
}
#head_a {
    text-align: center;
    height: 20px;
}
.head_select {
    color: black;
    position: relative;
    text-decoration: none;
}
.active {
    color: rgb(255, 109, 0);
    position: relative;
    text-decoration: none;
    border-bottom: rgb(255, 109, 0) 2px solid;
    padding-bottom: 6px;
}
#head_left {
    float: left;
}
#head_center {

}
#head_right {
    float: right;
}
iframe {
    display: flex;
    width: 300px;
    height: 90vh;
    border: none;
}
.college_span {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 25px;
    border-radius: 15px;
    border: rgb(255, 109, 0) 1px solid;
    color: rgb(255, 109, 0);
    float: left;
    margin-right: 15px;
    text-decoration: none;
}
.all {
    color: white;
    background-color: rgb(255, 109, 0);
}
#frame {
    display: flex;
    width: 300px;
}
.main_img {
    width: 130px;
}
.main_img2 {
    width: 280px;
    margin-top: 10px;
}